Alaska much like other states in the United States requires all vehicles on the roads to have a minimum insurance coverage in the event of an accident. You might want to check with an insurance agent as to how much insurance you will really need. The minimum is only what the state requires but most times in a major accident this is going to cover the bare minimum. Have additional insurance coverage will be good to have in the event of any major accident.
If you live in Alabama then you will need to ensure that you have proper insurance when you register your car in the State. The State of Alabama has it minimum requirements for insurance when registering the car and you will need to ensure that you have this covered. Note however that this is the minimum coverage required and you might also need to apply for topup auto insurance in the event of a really disastrous accident.